GENERAL DESCRIPTION

The AD8641/AD8642/AD8643 are low power, precision JFET input amplifiers featuring extremely low input bias current and rail-to-rail output. The ability to swing nearly rail-to-rail at the input and rail-to-rail at the output enables designers to buffer CMOS DACs, ASICs, and other wide output swing devices in single-supply systems. The outputs remain stable with capacitive loads of more than 500 pF.

FEATURES

Low supply current: 250 µA max

Very low input bias current: 1 pA max

Low offset voltage: 750 µV max

Single-supply operation: 5 V to 26 V

Dual-supply operation: ±2.5 V to ±13 V

Rail-to-rail output

Unity-gain stable

No phase reversal

SC70 package

APPLICATIONS

Line-/battery-powered instruments

Photodiode amplifiers

Precision current sensing

Medical instrumentation

Industrial controls

Precision filters

Portable audio

ATE